Technical Info & How To's

ok so i have the pio 760mp and i was wondering if turning the loud feature on my deck is bad??...the guy at the audio place here told me that but it sounds alot better when i have it on.Is there a way to make up for this its off???...he said it would mess up my speakers alot faster if i leave it on.

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How do i properly wire my 4 ohm subs to 1 ohm? when I've done it in the past with my audiobahn flame q's my fosgate hx2's and my cvr 12's you would always get that electrical burning smell and subs would get really really hot in the center of the top please help me cuz i really dnt want the same problem with my new soundquebd hds3 12's i bought a 1200.1 d class Zeus amp so i won't be over powering them cuz subs r 1200 rms so i want to wire them at 1ohm so i get the 1200watts and b slamming greatly appreciate all the input if u can please help me I've watched the how to videos on YouTube but still got that funky smell please help

First off what is already done: 130amp alternator Yellow top optima 55ah Big 3 1.5 digi cap (bought this a while back before I knew very much about car audio) SAZ-1500D JL 13w7 (for sale if anybody wants it) Planning on two SA-12's when the JL sells My question is, I have an XS power D975 (2100amps max, 35ah) on the way, now should I just scrap the cap and just go with the power cell, or should I go ahead and just add the power cell to my setup? I have searched all over the web and every car audio forum I can think of, as well as YouTube, to try and find an info on how to wire a second battery with a capacitor as well. It's all either one or the other, can't seem to find …

OK- I have read more than a few times on here about 'loading' a sub or port off of objects. Can someone offer me a laymans explanation of how this affect the sound/output? Tried to do a search with no luck.

What is sensitivity? The sensitivity of a driver is typically defined as the sound pressure level of the loudspeaker given 1 watt of power input, measured at a distance of 1 meter, measured on-axis with the loudspeaker and measured in infinite space with the loudspeaker mounted to an infinite baffle. While the later part is typically assumed but not stated, the former part is the reason you generally see “1w/1m” or “2.83V/1m” stated along with the sensitivity specification. But wait, is 1w/1m equal to 2.83V/1m? The answer is only for an 8ohm impedance driver. We know this because of ohms law, where Power = Voltage^2/Resistance. If the load is anything other than 8ohm the…

In this tutorial write up we will be covering how to create some awesome door panel pods that will add a custom look to your install, allow you to integrate multiple speakers into a door panel, and allow you to control the mounting position of the speakers. Note that while these are in fact door “pods” that are not actually permanently bonded are made as part of the door panel itself, there are many techniques within that could be used if you were in fact planning on creating door “panels” from scratch. Let’s begin! Step 1: Woodwork and Templates: In order to have a good foundation for our door pods we want to make awesome speaker rings. The video above covers m…

It has been debated rather hotly for years, and now it has become pretty much accepted that MP3 and sound quality do not mix. But why is it? Why do some people hear so much loss in their systems and others don’t? Are my old ears really better then someone 30 years my junior? Someone who still has a large amount of their hearing range left, while mine has deteriorated over the years should be able to hear these losses better then I! I started with home tower speakers in the back seat of my old Delta88 back in the days when we had no real systems, and we still had post mounted tape decks and 8-tracks. Then times changed, and we started putting in tape decks with trunk mount…

I recently purchased a SSA Evil 18in sub, and a 3k rms amp. my first ever real set up so im pretty new to car audio. but i have a question and in need of advice. when i turn up the volume it almost sounds like the subwoofer is bottoming out or making a clicking noise. is this normal or do i need to lower the power on it. or is there more to it than just that?

Figured I'd post some stuff up seeing as how it has been a hot topic as of late. The biggest problem with rewinding a stock alternator is the fact that most winders do nothing more than rewind the stator for additional output. This does nothing but increase upper RPM output and decreases the cut-in RPM. This is the RPM in which the alternator begins charging. This can be controlled with a lower cut-in regulator, but that is just a band-aid. The alternator will still produce nothing more than stock output at a low RPM. When looking for a GOOD unit, make sure to ask the manufacturer how the alternator was built. You want to look for one that has had a rewound rotor a…

i am wondering the proper way to ground an amp. ive tried 3 different spots on the body sanded the paint off and i dont think im getting a good ground. when my rca cables are pluged in i get a nasty sound and when i unplug them it goes away. i just tried a brand new set of rcas today and it did nothing to help. do i need to run a ground all the way back to the battery?

copied from the Basic Car audio web site and from FXN A power amplifier takes an input signal, usually a preamp level signal, which has both low current and low voltage characteristics, and produces an output which will have higher current and voltage levels. The power supply available to the audio output IC in a head unit is limited to the battery voltage of the vehicle. This means that the head unit can produce an audio signal with a limited (by the battery voltage) voltage swing, and therefore a limited power output to the speaker. Most amplifiers have a special circuit (switching power supply) to boost the available battery/charging system voltage to a higher voltage…

I want to thank Polecat for researching this for me even though he is very busy. I was curioius about the figures since they were not posted on their website. here is what he just emailed me with: KX 100.2 141 KX 150.2 370 KX 200.2 401 KX 250.2 225 KX 350.2 359 KX 450.2 245 KX 550.2 539 KX 850.2 303 KX 200.4 223 KX 350.4 148 KX 650.4 140 KX 550.3 132/ 97 KX 700.5 110/ 174 KX 400.1 105 KX 600.1 70 KX 1200.1 72 KX 2500.1 60 SX 400.2 210 SX 500.2 140 SX 600.2 158 SX 900.2 …

Pretty surprising results, I would have bet my money on the Gorilla Glue and it got its ass kicked. http://www.audiojunkies.com/blog/346 I'm going to have to try out the Titebond III on my next box and see if I like it. * Sorry if this is in the wrong place, I figured it would be the most relevant here.

I've never built a box and need help with a step by step process or blueprint on building a box wanting it 5.2 net cubic ft and tuned for them low lows I've gotta Chevy blazer 4 door to put it in and wanting subs to face up towards roof and port to face the back hatch. I've got two SoundQuebd HDS3 12's I'm putting in it. gunna b for everyday and mild comp bas. powering them with a 1200.1 super d class Zeus mono amp with big 3 upgrade and 0 gauge ran. please someone help me

Amplifier bridging is simply using 2 driven output channels to drive a common load. For 2 channel amplifiers, one left signal and one right signal is used to drive a mono speaker load. Keep in mind that mono and bridging are not necessarily the same. Mono means that there's only one output signal. There could be more than one speaker but each speaker will have the same output. Bridging means that you are using more than one source of power to drive a load (speaker). The sources of power are one each output from either channel of the amplifier. A long time ago, amplifiers had signal on the positive output speaker terminals only. To bridge one of those amplifiers, you'd hav…

Not sure if im in the right section, but I emailed focal usa and asked if they could repair my 15" focal sub, and they said they no longer make any parts for it, and that i would need to get a recone kit, i emailed him back to ask if there was anybody that makes one that would fit, and no response in over a month... I don't know.. the sub kicked a$$ when it was up and goin, now the ring around the cone is broke,.. i paid around 2k a few years ago, and i can't even find a recone, something is wrong here ..lol... does anyone know where, or how i could fix my sub.? i know how to do a recone, if only someone made them.. thanks in advance.

Howdy everyone, I am looking to seal off the trunk of myv 06 impala. The box was facing towarda the rear (port/sub) facing towards the trunk hatch. But now were trying to flip it facing in. ATM I'm running 1 15inch fI bl by a 1000d sundown. I want to thrown another 1000 and strap it but from research I might have option other then Ronaldo get a btl. But for the moment, for now, I want to flip the box around. I could use some tips. Or a link robs tutoral, thanks

Kent asked for this a while ago... I dug up some links. Enjoy. http://audioforum.termpro.com/cgi-bin/ubb/...ic;f=8;t=021625 http://forum.soundillusions.net/showthread.php?t=45647 http://hyperphysics.phy-astr.gsu.edu/hbase/pfric.html Good reading, good points, easy read. -Nick

click link>>> http://www.team-bio.com/RE_rebuild.htm

Before installing a power amplifier in your system you should take into consideration the vehicle

i am writeing this to try and help people understand what the specs of there amps mean. i'm not a expert on amps but i know enough to write this. when chooseing a amp theres many thing to look at like class a/b or class d and if you need a 2ch, 4ch or mono amp it go's on and on. ....so here it go's.... (in random order) you will need to know if you need a class a/b. class d ect ect. they are many types of class's like a, b, , c, a/b, d, t, x but the one's you see more in car audio is a/b and d. now there are more and more class t amps comming out because the price to build them are going down. CLASS A: these amps have an output device that never turns off, so they are a…

How would I go about creating more AC AMPS to go into the sub. I feel this would lower my box rise, true or false? I'm getting high AC Voltage readouts but I feel the AMPS are lacking thus creating a high ohm load. More DC amps going into the Sundown 3000? That's the only thing I can think of. This is a rundown of what I have installed '09 Toyota Yaris Pioneer avh 3100 2 din DVD (4 volt out) Pioneer 3 way 5 1/4's & 6x9's Pioneer 600 x 4 (4 channel amp) AA SMD 15" Sub Sundown saz 3000d DC Power 150/320 amp alt 1 Kinetik HC 1200 (up front) 1 Kinetik Hc 2400 (2.5 ft from the amp) Big 3 w/ extra grounds all in Fosgate 1/0 1 run pos. (~14 ft) front battery to rear batt …

i found this, so im passing it on..... Car Batteries What you need to know about your vehicle's battery. Most of us don't think much about the battery in our vehicle; we simply turn the key and expect the engine to start. We expect the battery to be reliable, long-lasting and maintenance-free. Once it fails, however, odds are you'll have to replace it, and knowing which type and size battery you need is important. Will it be conventional, maintenance-free or recombination? Conventional Batteries A 12-volt automotive battery has six compartments or cells. Each cell has a series of alternating positive and negative plates separated by isolators. All negative plates in th…

If you have two 12in mtx subs at 600rms, and you have one 12in fi bl sub thats 1500rms. would the FI be louder? The fi sub is in a ported enclosure built to the specs and the two 12's is in a sealed prefab box???